Sorry if some similar topic already exists, I haven't found it anywhere.

So... there used to be an option to set an alert for new comments on reviews, which has always been very useful for me. When I place a comment or a question on someone's review I don't want to miss a reply and setting alerts helps a lot. However, this option seems to disappear recently and there are only "New review on product" and "New discussion on product" alerts left (under the "Information" headline). Before, these used to be only on product's page and review's page offered at least one more.

I'm wondering why that would happened. I mean, wasn't it super convenient?